Nut and bolt-head wrench.



C. HERRIVIAN.

NUT AND BOLT HE'AUWRENCH. APPucATloN met; im". 2a. 1911.

1,297,846, Y Patented Mar. 15 19,19.

{,/4/ J I v I I BY ATTORNEYS CHARLES HEIRRMAN, OF NEW YORK, 1li. Y.

NUT AND BOLT-HEAD V7RENCH.

Speccation of Letters Eatent..

Patented Mar. 18, 1919.

Application file December 2S, 1917. eral No. 269,352. f l

T o rzZZ ywhom t may concern.'`

Bc it known that I, @Hannes Hermann, a citizen of the United States, residing` at New York. in the county of New York and State ot New York, have invented certain new and use-Ful improvements in Nut and Bolt-Head llfrenchcs; and do hereby declare the following to he a ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relatos to nut and holthead wrenches and it has for an object to provide a jaw formation by which each end ot a double ended wrench may have a capacity ttor a plurality of sizes of nuts or holtheads. i

A `further object of this invention is the provision or" a wrench head having jaws formed to accommodate several sizes of nuts or holtheads, and having said jaws so formed as to have certain parts thereof reinforce those parts upon which strain is exerted when in use.

A further object is the provisionof a wrench head having jaws formed therein and having` the adjacent faces of said jaws in stepped formation having corresponding steps on each of the jaws to present sockets hut having the steps of each of the jaws o'- set varyingly, in varyingly substantial pan allelism so that by two or three sets of step faces, three or four sizes of nuts or holtheads may he accommodated. j

Further objects will he apparent from the following specification, appended claims and drawings thereof, in which,

Figure 1 is a perspective view oit the wrench showing the 'features of this invention incorporated therein,

Fig. 2 is an end eleva-tion thereof,

Fig. 3 shows a slightly modified form, and

Fig. a is a perspective view of a mode of using the wrench.

Referring to the drawings in which the several features of this invention are clearly shown, indicates a handle portion oi a double-ended wrench having the wrench heads 11 and 12 formed at the opposite ends F the handle member. Each of these heads is formed into the jaws 13 and 11i which have their adjacent faces-stepped as at 5. These jaws have corresponding1 portions and have the steps oiiset to a greater extent at one side than at the other, as shown clearly in Fig. 2, so as to allow the faces 16, 17, 18

to form the faces 22, 23, 24, 25

and 19 respectively to he used in gripping nuts or holt-heads in various combinations. That is, for one size ofbolt-head having a transverse dimension indicated at C, the faces 16 L ud 17 are used, foran intermediate 4size indicated bv B, the faces 18 and 19 are used, hut for the smallest sizeindicated at Af the faces 17 and 18 are used, so it is thereby seen that three different sizes of nuts may he gripped by the wrench by portions of the jaws. As shown in Figs. 1 and 2, it is possible for a single wrench with two sets of jaws in staggered relation to accommodate siX sizes of nuts. As to Figs. 1 and 2 it may also he noted, the weakest portion ot a wrench aw is on lines fvwm-an at the junction of the jaw faces and crotch and the weakness of this line on aw 13 when either of the faces 16 or 18 is used is compensated for by the material forming the other face, as the case may he. and similarly, the weakness of 'the jaw 111 is compensated for by the metal forming either of the faces 17 or 19, which is not being used. This ena-hlesa maximum strength jaw with a minimum of bulk and metal, a saving in quantity production, and a greater manipulative ease in restricted spaces and corners. v The offsets which produce the stenpedfor- 'mation of the 'faces 1G, 17, 18 an-d 19 are indicated at 15a and 15b, and the curved, orv

otherwise formed faces, which connect the ends of the faces 15, 17, 18 and 19 across the crotch may he identified by the characters 1Ga and 18", respectively. The oii'sets '15a and 15b continue between the curved faces 16a and 18, to a common meeting point which occurs at the intersection of the curved planes of the faces A16a and 18a. These oii'sets are inverted relatively on the opposite sides of the meeting point. t may further he noted that the crotch', curved faces 16L and 181 are eccentric with respect to each other in the separate companion sets ot faces. v l l When the Jfaces 17 and 18 are being used, the tend eney oi. the strain exerted upon the wrench to twist the jaws land 111- occurf ring1 in the contact of one orP the faces 17 or 18 is countcra'cted hy the other 'of the faces so it is seen that the wrench may he equally as convenient in use for any of the several sizes.

ln Fig. 3, the jaws 20 and 21 are steppedl vand 26. ln

this type, the faces 22 and 23 receive the largest size nut, the feces und 2 t size nut, the feces 25 and the i en ceeding standard size of nut9 while tie faces 2i and will occonnnodete the smallest size of nut. ln this type et' Wrench-heed, Jionr sizes of iiutgripping jaws niej; be Iiornied in e single wrench-head having medion lines of each olf the pairs of gripping surfaces parallel Iand set to the cesired angle With respect to the medizin line of the handle.

it is eiiident in `View of the iforegoing, that numerous modifications tney be niede in View of the appended cleinis without departing` troni the spirit of this intention, and no limitation is implied by the drawings which are submitted for illustrative purposes only. 'laying thus described. this invention; i claim: l. n a. nut and bolt-heed Wrench, spaced jews having parallel stepped 'faces v:ind het# ing the corresponding steps of the opposite jaws odset to different entente to occonnnoditte as ine-ny diiierent sizes of nut-s and boltheeds as the number of sets of corresponding steps -plus one.

2. ln :t nut and boh-heed Wrench, spaced jews having parallel-faced steps7 said steps diering as to Width of onset, seid being; inverted in the opposite feces of the jew and being right-angular thereto, and,

said offsets facing obvesely and reyersely respectively from the saine horizontal plane.

8. in zi nut und bolt-heed wiench7 spaced jaws having piirnlle -nccd steps, said siens -difering as to Width of oti'set, seid offsets being oi' s uniioi'n width along cach jen", and said offsets being'oif n broken :ind inverted continuity through the crotch und junctional section of the wrench jaws.

e. in zr nut and bolt-heini wrench, spaced jams having parallel-stepped faces, said steps being` disposed in horizontal plane companionships, the vertical planes of the innermost step faces oi' cach set being1 nnthe obstructed, and the vertical planes oi' outermost step feces et' each honzontnl conipenion set being onefwny obstructed by the inward stepping of the rcsioectif'e innermost stepped jaws.

5. n a nut and bolt-head wrench, spaced jews having ponnllel-steppeiil feces? seid steps beingY disposed in horizontal plane conipenionships, the vertical plone or the innermost gripping foce oi one step und the vertical plano of the innermost lince ot' the other step being unobstructed und forming thereby on additional nnt und bolt-hczid engaging ineens.

6, in o nut and bolt-heed wrench. spaced jews having" pnrellelstepped feces, seid steps differingin the respective jews in the width of odset, seid steps being; in paired companions ,ip in differing horizontal Diane levels, the gri :tacos oi one coironnion set respectively 3i..

sno-` "horizontel conti girone vertically associated gripping another companion set in another piene,

a.. nut -(ind bolt-heed Wrench, spaced jans :frying parallel-stepped faces, the oyerlappi g advanced step fece of one jow being companion to the retracted step fece of the opposing jow, end the retacted step fece oi the iirst mentioned jew being companion. to the projecting advanced step face o the sfere-mentioned opposing jaw,` and the se constituted companion sets forming e range of diering sizes of opening,V and the oyerlepoingly advanced step fece of one jew conlpenioned by the projectingly advanced step of the other, opposing, jaw forming between theii parallel vertical planes the third differing sized opening and thereby making possible Jdie formation of e. double open ended init and bolt-heed Wrench having e plureiity of up to sin differing sized openings 8. .in e, nut and bolt-head Wrench, ews having parallel-stepped faces, havin he distances between each peil" to eccoinniod te nut or boltheeds oi? dinieient dimen- `ions7 and hsvingkthe stepped feces offset so that the projecting step of one pair ot steps -oreseifits reduced opening with the projecting step of the other pair 0;? steps 9. ln :t one-pifr-ice7 one-Way opening nnt and bolt-heed Wrench, jews in parallel step foiinstion, seid steps differing es to Width oit offset, the step formation in one jew bew ing;` in inverted order with respect to that of the opposite so that en additional nut end bolt-heed openingis formed for the nnniber or" sets of feces.

l0. in aV one-piece, one-wey opening not and bolt-head Wrench, spaced jews having parallel stepped feces, seid steps being1 disposed .in horizontal plone conipenionsli r, the included space of each plane being s .i nble for e different size oip nut or bolt-henri., there being e plurality of such planes s stepped faces in each companion set fornii. an individual socket, and the innermost 'P one jim' cozicting with the innermost of the other jini in another set of corn pzinion inces forming n socket for e smallest size nnt ,and bolt-heed rainy of feces comprising o peil' of oo ordinate faces for each adopted size of n or bolt-heed having the seperate pairs o set und staggered to utilize one face of each pair to forni nn additional and smallest nut and bolt-head engaging socket.

1:2. ln :i one-piece? nut and boltfhend wrench, comprising e. longitudinal centr-eil noloi und lnnidle member? of any suitable confer. i tion, @zich end of seid handle hav :an enlarged head torni. hereom seid ring nut und bolt heed engaging rined therein` said f jaws being oinnztion with o ets of said et;V

n u's ic n :i nut and bolt-head Wrench3 :einel@ il Leer/,see

differing in the respective stepped faces, and said offsets facing obversely and reversely relative to a horizontal plane including them.

13. ln a one-piece, one-wayY opening, nut and bolt-head wrench, spaced jaws in parallel stepped formation, said steps being disposed in horizontal planes, the step formation in one jaw being in inverted relation to that in the other jaw, the oilsets of said steps differing as to width, and the horizontal plane passing through the said offsets having an opening, as between the said offset-s, accommodating an additional and smallest size nut and bolt-head,

14. In a nut and bolt-head wrench, spaced jaw members having stepped contact faces, with companion step portions inthe sepa.- rate jaws, tbe-companion step portions in the jaws being joined by curved faces at the base of said jaw members, the oset portions formed in the stepped faces being of different widths in tbe opposite jaws, said oilsets being oppositeljY formed in said stepped faces, and continuing between 'the curved faces at the base of said companion step faces to a common point, and said Curved faces being eccentric with respect to each other in the separate eon'ipanion sets of faces.

15. ln a one-piece, one-way opening;I nut .and bolt-head wrench, spaced jaws having' parallel stepped faces, said steps disposed in a plurality of horizontal planes, the faces of said steps being disposed in a suitable pluralitjv of vertical planes, the vertical planes of the innermost steps of each side being unobstructed and the other remaining, vertical planes oit' Vthe retracted i'aees being one way obstructed, and the unobstructed Vert-ical planes oi the innermost steps form- 'ing therebetween an additional, diering and smallest size nut and bolt-bead engaging openine'.

In testimonyv whereof l affix my signature.

CHARLES HERRMAN. 

